package com.ls.netty.websocket;

import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

//TextWebSocketFrame 表示一个文本帧（frame）
public class MyTextWebSocketFramerHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {

        System.out.println("服务器收到消息:" + msg.text());

        Channel channel = ctx.channel();

        channel.writeAndFlush(new TextWebSocketFrame("服务器时间:" + LocalDateTime.now()));
    }

    //连接触发
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        //asLongText 唯一值 .asShortText() 会重复
        System.out.println("进入" + ctx.channel().id().asLongText());
    }


    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("退出 ");
    }


    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("异常" + cause.getMessage());
    }
}
